Flush Welded Sanitary Tank Bottom Diaphragm Valve
- Model:
- JOV-TBHM01-22
- Brand:
- J&O
- Material:
- SS304 or SS316L
- Connection:
- Clamped
- Working Pressure:
- 10Bar
- Payment:
- T/T, L/C, Western Union
A sanitary tank bottom valve provides full gravitational product evacuation flush against the lowest curve of a vessel shell to suppress uncleaned fluid hold-up. Machined from forged 316L stainless steel, this base assembly incorporates a thick weld pad that secures directly into the dished head, ensuring complete interior drainage without stagnant pipe pockets.
Radial Diaphragm Sealing Dynamics Versus Bore Restriction
Process systems handling media suspensions contrast this full-flow orientation against a tank bottom diaphragm valve, where an elastomer barrier deflects across an internal weir.
While raised weir ridges cause directional fluid deceleration during gravity draw-down, a coplanar flush seat maintains an unobstructed passage across the seal perimeter.
This unrestricted pathway prevents viscous slurries from settling along internal steps, allowing delicate cell fractions to drain freely without localized shearing damage.
Tank Discharge Mechanical Port Configurations and Hydraulic Efficiency
| Structural Parameter | Direct-Weld Flush Bottom Unit | Standard Extended Flange Connection |
|---|---|---|
| Internal Gravity Drainage | Continuous downward slope clearance | Horizontal stub puddle formation |
| Cleaning Solution Contact | Unobstructed line-of-sight impingement | Recessed shadowing beneath crevices |
| Pipe Stress Absorption | Monobloc forged weld pad containment | Split clamp expansion misalignment |
| Operating Pressure Integrity | Continuous metal seat backup retention | Unreinforced elastomer rim extrusion |
Shear-Sensitive Fluid Evacuation and ASME Drainability Compliance
Welding the heavy collar smoothly into the lower shell allows the sanitary tank bottom valve to sustain uninterrupted gravitational acceleration without boundary layer turbulence. Welders employ precision orbital alignment procedures, ensuring that interior metallic transitions remain planar with adjacent vessel sheet walls.
Interior contact faces receive mechanical honing followed with electropolishing down to Ra ≤ 0.38 µm. This processing aligns with rigorous ASME BPE criteria, ensuring aggressive process fluids rinse away completely without adhesion along the lower seat zone.
CIP Impingement Velocity and Bonnet Seal Expansion Resistance
Routine sanitization cycles force rapid temperature shifts between ambient cleaning chemicals and 130°C pressurized saturated steam.
Thermal cycling across extended sterilization runs causes polymer flow within an unmonitored tank bottom diaphragm valve, creating external weepage risks at bonnet connection points.
Reinforced fluoropolymer seat inserts supported through calibrated spring-loaded thrust collars accommodate thermal expansion, maintaining positive mechanical sealing without manual tightening.
Technical Data
| Name: | Sanitary tank bottom valve |
| Body Material: | AISI304,AISI316L |
| Diaphragm Material: | EPDM,Siliton,Viton,EPDM+PTFE |
| Size: | 1"-2" or as required |
| Standards: | DIN,3A,SMS,ISO,IDF |
| Max pressure: | 10 Bar |
| Working temp: | -10°C to +120°C |
| Certificate: | PED 97/23EC |
| Applications: | Pharmacy, beer, food, dairy, brewing, |
Product Parameter
Product Pictures
